The negative birefringence optical compensation films can be used to significantly improve the viewing angles of single-domain and multi-domain LCDs. We review the major applications of the applications of negative birefringence compensation to TN, STN, vertically aligned LCDs, and parallel aligned LCDs. Most recently, there are three TFT/LCD panels with improved large viewing cone being commercialized with the use of the negative birefringence optical compensation films. These panels include: (1). US TFT/LCD vendors compensated single domain TFT/TN panels; (2). Sharp compensated 2-domain Super-V TFT/TN panels; and (3). Fujitsu super-wide compensated 4-domain vertical aligned TFT/VA panels.